Raw material bin for silicon particle production

Abstract

The utility model relates to the technical field of silicon particle production equipment, in particular to a raw material bin for silicon particle production, which comprises a bin body, a conical plug is arranged at the bottom of a discharge pipe of the bin body, vertical telescopic rods are respectively fixed on two sides of the plug, and the vertical telescopic rods are fixed on the outer wall of the discharge pipe. A vertical feeding screw is fixedly connected to the center of the top of the plug, a vertical sliding way is arranged at the bottom of the plug, a plurality of vertical clamping grooves are evenly distributed in the inner wall of the sliding way in the circumferential direction, a vertical rotating shaft is arranged in the sliding way in a sliding mode, protruding strips matched with the clamping grooves are arranged on the side wall of the vertical rotating shaft, and a stepping motor is connected to the lower end of the vertical rotating shaft. The material bin is simple and reasonable in structure, efficient discharging operation can be carried out, materials to be discharged in the material bin body can be cut, dispersed and stirred in the opening and closing action of the discharging pipe, hardening and arching of the materials are avoided, the borne resistance is small in the stirring and dispersing process, and loads are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of silicon particle production equipment, and specifically relates to a raw material bin for silicon particle production. Background Art

[0002] The production of silicon particles generally involves reacting silicon raw materials, carbon and chlorine to generate flue gas containing dust, gaseous ferric chloride, gaseous aluminum chloride and gaseous silicon chloride, and subjecting the flue gas to heat exchange and impurity removal treatment; then, the gaseous silicon chloride in the third dust-free gas is condensed into liquid silicon chloride, and the liquid silicon chloride is reduced to polycrystalline silicon. The silicon raw materials in the above process are silica powder and / or microsilicon powder. Silica powder or microsilicon powder is generally stored in a raw material bin and discharged from the discharge pipe of the raw material bin when needed. Due to the large amount of material in the raw material bin and the long accumulation time, the material is compacted, agglomerated, or bridged or arched in the raw material bin. In addition, for a raw material bin with a large capacity, stirring and dispersion are difficult when unloading, which affects the unloading efficiency and is not conducive to production. Therefore, a raw material bin for silicon particle production is needed to solve the above technical problems. Utility Model Content

[0003] In response to the above-mentioned defects in the prior art, the utility model provides a raw material bin for silicon granule production, including a bin body, a feeding pipe is provided above the bin body, a discharging pipe is provided below the bin body, a conical plug is provided at the bottom of the discharging pipe, connecting blocks are respectively fixed on both sides of the plug, and vertical telescopic rods are respectively connected to the two connecting blocks, and the fixed ends of the vertical telescopic rods are connected to the outer wall of the discharging pipe, a vertical feeding screw is fixedly connected to the top center of the plug, and a vertical slide is provided at the bottom of the plug, and a plurality of vertical slots are evenly distributed on the inner wall of the slide along the circumferential direction, a vertical rotating shaft is slidably arranged in the slide, and convex strips matching each slot are provided on the side walls of the vertical rotating shaft, and the convex strips are slidably arranged in the corresponding slots, and a stepping motor is connected to the lower end of the vertical rotating shaft, and a material receiving device, such as a material receiving box, is provided below the discharging pipe, the stepping motor is fixed in the material receiving box, and a protective cover can be provided outside the stepping motor. The plug is driven to move up and down by the extension and retraction of the vertical telescopic rod, thereby realizing the plugging or opening of the discharge pipe; when the plug moves down along the vertical shaft, the discharge pipe is opened, the feeding screw moves down, the stepper motor drives the vertical shaft to rotate, and the feeding screw rotates under the cooperation of the slot and the convex strip, so that the material is efficiently discharged from the discharge pipe to avoid blockage; when the plug moves up along the vertical shaft, the discharge pipe is blocked, the feeding screw moves up and inserts into the material in the silo body, the stepper motor drives the vertical shaft to rotate, and the feeding screw rotates under the cooperation of the slot and the convex strip to loosen the material. During the opening and closing process of the discharge pipe, the stepper motor does not move, which reduces the load of the vertical telescopic rod and improves stability.

[0004] Preferably, the top of the feeding screw is fixedly connected with a vertical connecting rod, and the top of the connecting rod is provided with a scraper ring, and the scraper ring contacts the inner wall of the silo body, and the scraper ring is fixedly connected to the top of the connecting rod through a plurality of fixed rods, and the plurality of fixed rods are radially distributed with the top of the connecting rod as the center. This arrangement allows the scraper ring to scrape the inner wall of the silo body when it moves up and down with the feeding screw to avoid the adhesion of the material, and at the same time, when it rotates with the feeding screw, it cooperates with the fixed rod to cut and stir the material to loosen the material and avoid the material from being compacted and affecting the discharge.

[0005] Preferably, a reinforcement ring is fixed at the connection between the connecting rod and the feeding screw, and a plurality of stirring rods are evenly fixed on the reinforcing ring along the circumference, and the upper ends of the stirring rods are fixedly connected to the scraping ring, and the plurality of connecting rods and the plurality of stirring rods are staggered. The setting of the stirring rods further increases the loosening range and stirring effect of the material, and improves the discharge efficiency of the material.

[0006] Preferably, the silo body comprises a cylinder and a conical bottom, the conical bottom is fixed to the lower end of the cylinder, and the scraper ring is located at the lower end of the cylinder after the vertical telescopic rod is extended.

[0007] Preferably, a circle of maintenance platforms is provided outside the silo body, and the maintenance platforms are connected to a manned ladder.

[0008] Preferably, the feed pipe is equipped with a material hoist, the feed pipe is also connected to an exhaust pipe, and the exhaust pipe is connected to a cyclone separator (dust collector). This arrangement facilitates feeding and dust removal of the silo body.

[0009] Preferably, the vertical telescopic rod is an electric push rod or a hydraulic cylinder.

[0010] The utility model also includes other components that enable a raw material bin for silicon particle production to be used normally, such as a stepper motor control component, an electric push rod control component, a hydraulic cylinder control component, etc., which are conventional technical means in the field. In addition, the devices or components not limited in the utility model, such as a feeding screw, a ladder, a dust collector, a cyclone separator, a material elevator, an electric push rod, etc., all adopt conventional technical means and conventional equipment in the field.

[0011] The beneficial effects of the utility model are as follows: the structure is simple and reasonable, and efficient material discharge operation can be performed; during the opening and closing of the discharge pipe, the material to be discharged from the silo body can be cut, dispersed, and stirred, thereby avoiding compaction and arching of the material; during the stirring and dispersing process, the resistance encountered is small, thereby reducing the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic structural diagram of a raw material bin for silicon particle production in an embodiment of the utility model;

[0014] Figure 2 for Figure 1 Right view of;

[0015] Figure 3 for Figure 1 A cross-sectional view of the middle silo body;

[0016] Figure 4 for Figure 3 The state diagram when the middle discharge pipe is opened;

[0017] Figure 5 for Figure 4 Top view of the middle scraper ring;

[0018] Figure 6 for Figure 4 Schematic diagram of the connection structure between the middle seal and the vertical rotating shaft.

[0019] In the figure: 1. silo body; 2. maintenance platform; 3. ladder; 4. feed pipe; 5. material elevator; 6. exhaust pipe; 7. discharge pipe; 8. material receiving box; 9. vertical telescopic rod; 10. scraper ring; 11. stirring rod; 12. feeding screw; 13. plugging; 14. connecting block; 15. convex strip; 16. connecting rod; 17. vertical shaft; 18. stepping motor; 19. reinforcement ring; 20. fixing rod. DETAILED DESCRIPTION

[0020] The present invention is described clearly below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not as a limitation of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative work, any modifications, equivalent substitutions, improvements, etc., should be included in the protection scope of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example

[0022] like Figure 1-6 As shown, the utility model provides a raw material bin for silicon granule production, including a bin body 1, a feed pipe 4 is provided above the bin body 1, and a discharge pipe 7 is provided below the bin body 1, characterized in that: a conical plug 13 is provided at the bottom of the discharge pipe 7, and connecting blocks 14 are respectively fixed on both sides of the plug 13, and vertical telescopic rods 9 are respectively connected to the two connecting blocks 14, and the fixed ends of the vertical telescopic rods 9 are connected to the outer wall of the discharge pipe 7, and a vertical feeding screw 12 is fixedly connected to the top center of the plug 13, and the plug 13 is fixed to the outer wall of the discharge pipe 7. A vertical slide is provided at the bottom, and a plurality of vertical slots are evenly distributed along the circumferential direction on the inner wall of the slide. A vertical rotating shaft 17 is slidably provided in the slide, and a convex strip 15 matching each slot is provided on the side wall of the vertical rotating shaft 17. The convex strip 15 is slidably provided in the corresponding slot. A stepper motor 18 is connected to the lower end of the vertical rotating shaft 17, and a material receiving box 8 is provided below the discharge pipe 7. The stepper motor 18 is fixed in the material receiving box 8, and a protective cover can be provided outside the stepper motor 18. A feeding belt is provided in the material receiving box to send away the discharged material in time.

[0023] The top of the feeding screw 12 is fixedly connected with a vertical connecting rod 16, and the top of the connecting rod 16 is provided with a scraper ring 10, and the scraper ring 10 contacts the inner wall of the silo body 1, and the scraper ring 10 is fixedly connected to the top of the connecting rod 16 through a plurality of fixing rods 20, and the plurality of fixing rods 20 are radially distributed with the top of the connecting rod 16 as the center. This arrangement allows the scraper ring 10 to scrape the inner wall of the silo body 1 when it moves up and down with the feeding screw 12 to avoid the adhesion of the material, and at the same time, when it rotates with the feeding screw 12, it cooperates with the fixing rod 16 to cut and stir the material to loosen the material and avoid the material from being compacted and affecting the discharge.

[0024] A reinforcement ring 19 is fixed at the connection between the connecting rod 16 and the feeding screw 12, and a plurality of stirring rods 11 are evenly fixed on the reinforcing ring 19 along the circumferential direction. The upper ends of the stirring rods 11 are fixedly connected to the scraper ring 10, and the plurality of connecting rods 16 and the plurality of stirring rods 11 are staggered. The setting of the stirring rods 11 further improves the loosening range and stirring effect of the material, and improves the discharge efficiency of the material.

[0025] The silo body 1 includes a cylinder and a conical bottom, wherein the conical bottom is fixed to the lower end of the cylinder, and the scraper ring 10 is located at the lower end of the cylinder after the vertical telescopic rod 9 is extended.

[0026] A maintenance platform 2 is disposed outside the silo body 1 , and a manned ladder 3 is connected to the maintenance platform 2 .

[0027] The feed pipe 4 is equipped with a material hoist 5, and the feed pipe 4 is also connected to an exhaust pipe 6, and the exhaust pipe 6 is connected to a cyclone separator (dust collector). This is convenient for feeding and dust removal of the silo body 1.

[0028] The vertical telescopic rod 9 is an electric push rod or a hydraulic cylinder.

[0029] Working principle: The plug 13 is driven to move up and down by the extension and contraction of the vertical telescopic rod 9, thereby realizing the plugging 13 or opening of the discharge pipe 7; when the plug 13 moves down along the vertical shaft 17, the discharge pipe 7 is opened, the feeding screw 12 moves down, and the stepper motor 18 drives the vertical shaft 17 to rotate. Under the cooperation of the card slot and the convex strip 15, the feeding screw 12 rotates, so that the material is efficiently discharged from the discharge pipe 7 to avoid blockage. When the plug 13 moves up along the vertical shaft 17, the discharge pipe 7 is blocked 13, and the feeding screw 12 moves up and inserts into the material in the silo body 1, the stepper motor 18 drives the vertical shaft 17 to rotate. Under the cooperation of the card slot and the convex strip 15, the feeding screw 12 rotates to loosen the material. During the opening and closing process of the discharge pipe 7, the stepper motor 18 does not move, which reduces the load of the vertical telescopic rod 9 and improves stability. During the feeding process, the stirring rod and the fixed rod first cut the material in the silo body in the vertical direction (the cutting length is the length of the downward movement of the plug), and then with the rotation of the feeding screw, the material is sheared in the horizontal direction, which improves the mixing efficiency. Cutting first and then stirring reduces resistance, which is beneficial to improving the dispersion effect of the material.

[0030] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A raw material silo for silicon particle production, comprising a silo body, a feed pipe is provided above the silo body, and a discharge pipe is provided below the silo body, characterized in that: A conical plug is provided at the bottom of the discharge pipe, and connecting blocks are respectively fixed on both sides of the plug, and vertical telescopic rods are respectively connected to the two connecting blocks, and the fixed ends of the vertical telescopic rods are connected to the outer wall of the discharge pipe, and a vertical feeding screw is fixedly connected to the top center of the plug, and a vertical slide is provided at the bottom of the plug, and a plurality of vertical slots are evenly distributed along the circumference on the inner wall of the slide, and a vertical rotating shaft is slidably arranged in the slide, and convex strips matching each slot are provided on the side walls of the vertical rotating shaft, and the convex strips are slidably arranged in the corresponding slots, and a stepping motor is connected to the lower end of the vertical rotating shaft.

2. A raw material warehouse for silicon particle production according to claim 1, characterized in that: The top of the feeding screw is fixedly connected with a vertical connecting rod, and the top of the connecting rod is provided with a scraper ring, which contacts the inner wall of the silo body. The scraper ring is fixedly connected to the top of the connecting rod through multiple fixing rods, and the multiple fixing rods are radially distributed with the top of the connecting rod as the center.

3. A raw material warehouse for silicon particle production according to claim 2, characterized in that: A reinforcement ring is fixed at the connection between the connecting rod and the feeding screw, and a plurality of stirring rods are evenly fixed on the reinforcement ring along the circumferential direction. The upper ends of the stirring rods are fixedly connected to the scraper ring.

4. A raw material warehouse for silicon particle production according to claim 2, characterized in that: The silo body comprises a cylinder and a conical bottom, wherein the conical bottom is fixed to the lower end of the cylinder, and the scraping ring is located at the lower end of the cylinder after the vertical telescopic rod is extended.

5. The raw material bin for silicon particle production according to claim 1, characterized in that: A circle of maintenance platforms is arranged outside the silo body, and the maintenance platforms are connected with a manned ladder.

6. A raw material warehouse for silicon particle production according to claim 1, characterized in that: The feed pipe is matched with a material hoist, and the feed pipe is also connected with an exhaust pipe.

7. The raw material warehouse for silicon particle production according to claim 1, characterized in that: The vertical telescopic rod is an electric push rod or a hydraulic cylinder.

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